Spring behavior of the lower extremity and muscle activities of the vastus lateralis and medial gastrocnemius in response to increased running speed in highly trained distance runners.
Previous studies have examined the effects of increasing running speed on stiffness-related mechanics and muscle activation; however, the relationships between changes in vertical stiffness (kvert) and leg stiffness (kleg) and corresponding lower-limb muscle activity, particularly in highly trained distance runners, re...